archive, classid, codebase, codetype, declare, standby valuetype, type axis, abbr scope in Java

Paint PDF417 in Java archive, classid, codebase, codetype, declare, standby valuetype, type axis, abbr scope

The attributes described in Table 19-2 are deprecated and removed from HTML5 primarily because they addressed presentational functions now delegated to CSS

Table 19-2

Parent HTML Element caption, iframe, img, input, object, legend, table, hr, div, h1, h2, h3, h4, h5, h6, p, col, colgroup, tbody, td, tfoot, th, thead, tr body body table, tr, td, th, body table, object table col, colgroup, tbody, td, tfoot, th, thead, tr br

(continued)

alink, link, text, and vlink background bgcolor border cellpadding, cellspacing char, charoff clear

Table 19-2 (continued)

Attribute compact frame frameborder height hspace, vspace marginheight noshade nowrap rules scrolling size type valign width Parent HTML Element dl, menu, ol, ul table iframe td, th img, object iframe hr td, th table iframe hr li, ol, ul col, colgroup, tbody, td, tfoot, th, thead, tr hr, table, td, th, col, colgroup, pre

Find a complete list of disallowed (22 total) and presentational (also no longer supported, 29 total) attributes no longer in the HTML5 picture in the HTML5 Differences from HTML4 document s Absent Attributes section at wwww3org/TR/HTML5-diff/#absent-attributes

The impetus for these new input types is to permit user agents (Web browsers as far as most of us are concerned, though other programs can interpret and render or analyze HTML markup) to solicit input and provide a user interface inside Web pages This is how content designers can gain easy access to standard capabilities for ready re-use, such as a calendar-oriented date picker or integration with an address book to access name, street address, e-mail address, phone numbers, and so forth These Application Program Interfaces (APIs for short) can interact with related systems or services, obtain input, and submit data in a carefully defined format to a Web server This approach gives users a better experience because their input can be checked and validated before sending it on to the server Generally, this also means faster handling because pre-checked input requires less processing on the server side and less time devoted to waiting for feedback from the server

These new input types differ from various new HTML5 elements mentioned earlier in this chapter because they apply only to the input element (they aren t independent markup elements) These input types identify specific kinds of input data and, generally, play the same role for HTML5 input data that data types play for variables in conventional programming languages (they tell you what kind of data they can represent) Table 19-3 spells out these new options

Table 19-3

Control A color well A date control A date and time control Description An sRGB color with 8-bit red, green, and blue components A date (year, month, day) with no time zone A date and time (year, month, day, hour, minute, second, fraction of a second) with the time zone set to UTC A date and time (year, month, day, hour, minute, second, fraction of a second) with no time zone An e-mail address or list of e-mail addresses A date consisting of a year and a month with no time zone A numerical value A numerical value, with the extra semantic that the exact value is not important Text with no line breaks Text with no line breaks A time (hour, minute, seconds, fractional seconds) with no time zone An absolute IRI Date consisting of a weekyear number and a week number with no time zone

A text field A month control A text field or spinner control A slider control or similar Search field A text field A time control

An API defines rules for communication and interaction with other programs from inside a specific program For most people, the Web APIs of greatest import for HTML5 are those that are called from inside HTML documents, to invoke special functionality for things like playing audio, playing video, and interacting with other applications, and that help to add to the Web browser user interface (dragging and dropping objects in Web pages, for example) Here s a list of APIs that HTML5 incorporates with the intent of providing help in creating Web applications (this quote comes directly from the APIs section in the W3C HTML5 Differences from HTML4 document cited two sections earlier): Video and audio playback API, for use with the new video and audio elements Access to offline Web applications through a special API An API designed for Web applications to register themselves to receive certain protocols and media types An API to permit page visitors to edit content and markup in concert with the new global contenteditable attribute A drag-and-drop API used with the draggable attribute to permit users to drag and drop items onto Web pages to provide input An API that exposes browser history data and that permits pages to add to that data to prevent breaking the Back button Mostly, these APIs are where the significant action is for HTML5 (think about the Adobe Flash controversy we covered earlier in this chapter) and where change is nearly inevitable between the draft version and whatever more final form(s) HTML5 takes APIs are the keys to user interaction and dynamic page behavior, and they will figure heavily into future uses for (and applications of) the Web and the Internet, especially in an era when many people are coming to believe that the Web and the Internet are more interchangeable than otherwise